2XU Men's Striped Run Compression Socks 100% Other Fibers Imported Anatomically correct left and right socks feature zoned padding for the right support during movement Compression in the shins, calves, ankles, Achilles and arches reduce fatigue and muscle soreness The graduated fit enhances circulation for faster warm up and recovery Seamless construction has zero seams for max comfort Antibacterial and moisture-wicking properties keep odors and sweat in check, 80% Nylon/20% Lycra